They stopped at the blue box, sitting tall on the hill. It was just past Sweet Apple Acres. The Doctor ran up to it excitedly and stuck the key in the lock. The door opened and he disappeared into the box. Ditzy came up just as the doors closed.
"What the heck are you doing in there?" she asked.
"Just come inside, and you'll see."
"In there?! It's a bit small, don't you think?"
"Just come on!" He said. His voice sounded far away.
"What the…?" Ditzy muttered as she opened the door. The Doctor stood beside a large, glowing tube. Surrounding the tube was a console station, covered in buttons, switches, levers and monitors. A couple of black chairs sat around it. It was a large, impossibly spacious room. The walls were a sleek metallic blue colour, and the floor was metal as well. The Doctor looked at her excitedly, his blue eyes sparkling.
"Welcome to the TARDIS. She can travel anywhere in time and space." The Doctor said, grinning. Ditzy ran back out, and examined the box.
"No, no no no no, this isn't possible. This, this can't…..But it's…" She gasped, and ran around the box, expecting to find something to prove it was a trick. Finding nothing, she stepped back inside.
"It's bigger…On the inside!" She said, in shock.
"IS it? I hadn't noticed." The Doctor grinned.
"This is….This is insane! Who are you, really? What are you?" She asked.
"I'm the Doctor." He replied.
"Doctor who!?"
"Oh, i love it when they say that. Could you say it again?"
"Doctor who…?" She said. The Doctor grinned.
"Right then, Ms. Hooves, I can go anywhere in the whole universe, in any point in time. Would you give me the incredible honour of accompanying me?" He asked.
"Me? Wha…Why would you want me?" she asked, visibly shocked.
"Well, i need a companion of course! I've seen it all hundreds of times, but it's brand new to you! Think about it Ditzy, brand new skies. Surely a pegasus would want to explore that. Besides, i have no idea how to use these hooves. Need someone who's a bit more experienced than I am. so what do you say? Will you run away with me?" He asked.
"You…You want me? why me? Of all the ponies in Equestria, you want me?" She said, a sad tone in her voice.
"You were the first face this face saw, of course. Besides, you were brave enough to take me inside. You had every reason not to trust me, to think i was crazy and walk away. But you didn't."
"I had to know what you were." She whispered.
"That's a dangerous topic ."
"Why?" She challenged. The Doctor didn't respond. It was quiet for a moment.
"So, where do you want to go?" He asked, a large grin on his face.
"Doctor! Who are you?" The grey mare pressed.
"You really want to know?"
"YES!"
"All right, I'm the doctor. I'm a time lord from the planet Gallifrey. I have two hearts, I'm a thousand years old, i've saved a thousand lives and a thousand planets. I'm the Defender of Earth, The Oncoming Storm. Does that answer your question?" He stood silently, waiting for a response.
"You're a thousand years old." She said finally. The Doctor rolled his eyes.
"Oy, shut up." The doctor laughed. "So, will you come away with me?" He asked. She waited only a moment.
"Of course." She replied. He grinned, then bounced around the controls, pushing buttons and flipping switches. A loud whirring sound filled Ditzy's ears.
"Hold on tight Mrs. Hooves!" He shouted above the noise. "And welcome aboard!"